With its unique structural design, the three combination screws integrate the advantages of each component, and play an indispensable role in many fields from home appliance manufacturing, electronic equipment assembly to building decoration, mechanical maintenance, etc., to help the efficient production and safe operation of various products with stable and reliable fastening performance.
In appearance, the screw part has a variety of common head styles, such as pan head, countersunk head, hexagonal head, etc., to adapt to different installation scenarios and aesthetic needs. The head of the pan head screw is rounded and protruding, which is more suitable for occasions where the surface roughness is not required and a larger contact area is required. Countersunk head screws can be flush with the mounting surface, making the overall appearance more tidy, often used in precision instruments, electronic products housing and other places where the appearance of exquisite requirements; Hexagonal head screws are easy to apply force with wrenches and are suitable for use in heavy machinery and industrial equipment connections requiring high torque tightening. The screw part usually has a fine and standard thread to ensure a tight fit to the threaded hole on the nut or the secured part for precise connection.
Flat washer is generally a round sheet, uniform texture, its main function is to increase the contact area between the head of the screw and the tightened surface, to disperse the pressure, to prevent the screw tightening of the contact surface caused by indentation, damage, especially suitable for soft texture of the tightened materials, such as wood, plastic board and so on. At the same time, it can also make up for the uneven surface of the fastened parts, making the fastening process more stable and reliable.
The spring washer is shaped like a spiral spring and is made of metal materials with good elasticity, such as carbon steel, stainless steel, etc. When the screw is tightened, the spring washer will produce elastic deformation, and continue to exert an axial reaction force to the screw with its own elastic force, which effectively increases the friction between the threads and plays an excellent anti-loosening effect. In the environment of frequent vibration, such as automotive engines, industrial machine tools, etc., this anti-loosening feature is particularly critical to ensure that the connection part remains tight for a long time to avoid mechanical failure or even safety accidents caused by loosening.
